FAA Information for Operators (InFO) 26003, published January 22, 2026, by the Flight Standards Service, formally recommends the integration of spatial disorientation (SD) training into curricula for pilots operating under 14 CFR Parts 91, 91K, and 135, including helicopter operations. The document is non-regulatory but carries significant institutional weight, citing NTSB Safety Recommendation A-21-006 and invoking FAA data indicating that SD is a contributing factor in approximately 80 percent of aviation accidents — a figure that underscores the scope of the hazard across general aviation, fractional ownership programs, and on-demand charter operations. The InFO explicitly excludes Part 121 scheduled air carriers, whose training structures are governed by separate regulatory frameworks, making its audience primarily the business aviation and charter communities.
The proximate catalysts for InFO 26003 trace directly to high-profile accident investigations, most prominently the January 26, 2020, crash of a Sikorsky S-76B near Calabasas, California — the accident that killed nine occupants including Kobe Bryant — in which the NTSB determined spatial disorientation to be the causal factor. The accident exposed critical gaps in SD training requirements for Part 135 helicopter and fixed-wing operations, particularly in environments involving instrument meteorological conditions, coastal terrain, and degraded visibility. The SDT Working Group convened by the Air Carrier Training Aviation Rulemaking Committee in January 2023 formalized a framework that the InFO now carries forward, recommending a layered approach spanning ground school physiology instruction, simulator-based scenario training including unusual attitude recovery, in-flight hooded instrument work, and periodic refresher integration.
For Part 135 operators specifically, the implementation pathway carries operational weight beyond individual pilot training. InFO 26003 directs Part 135 certificate holders to incorporate SD modules — covering awareness, avoidance, recognition, and recovery — into their general operations manuals. While the InFO is advisory rather than mandatory, the FAA's framing and the regulatory history surrounding the Calabasas accident suggest that this guidance will serve as a benchmark in Principal Operations Inspector oversight and in any future rulemaking. Operators who treat this InFO as a compliance floor rather than an aspirational document assume meaningful regulatory and liability risk, particularly for helicopter operators conducting medevac, executive transport, or offshore missions in routinely demanding meteorological environments.
The InFO reflects a broader FAA posture of addressing persistent accident categories through structured training intervention before committing to full rulemaking cycles, which can span years. SD is physiologically involuntary — illusions such as the somatogravic effect, the leans, and Coriolis sensations arise from the inner ear's inability to accurately detect sustained accelerations — meaning that training emphasis must shift from hazard awareness toward active instrument trust and recovery discipline under stress. This neurological reality makes scenario-based simulator training, specifically exercises that replicate the sensory-instrument conflict, the highest-value intervention available. The University of North Dakota's positioning as an FAA-recommended SD training center as of February 2026 signals that the training industry is already organizing around InFO 26003 as a revenue and service differentiator.
The issuance of InFO 26003 continues a regulatory trajectory that began accelerating following a cluster of high-visibility SD accidents in business aviation. Part 91K fractional operators — who operate large-cabin turbine equipment under demanding scheduling pressures and into diverse destination weather environments — represent a segment where the guidance has particular operational relevance, as crews may accept marginal VFR conditions or transition to IMC under time pressure. The practical instruction for all affected operators is clear: treat InFO 26003 as the leading edge of a forthcoming mandatory standard, begin developing structured SD training modules now, and document that development in operations manuals. The FAA's historical pattern of converting advisory InFOs into enforceable requirements, especially in areas with documented NTSB recommendations, makes early adoption the lowest-risk posture for certificate holders across the affected regulatory categories.